Depictions of animals in ancient Egyptian artefacts have helped scientists assemble a detailed record of the large mammals that lived in the Nile Valley over the past 6,000 years. A new analysis of this record shows that species extinctions, probably caused by a drying climate and growing human population in the region, have made the ecosystem progressively less stable.
The study, published in Proceedings of the National Academy of Sciences (PNAS), found that local extinctions of mammal species led to a steady decline in the stability of the animal communities in the Nile Valley.
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The fall foliage season that prompts millions of Americans to undertake jaunts into the countryside each year could come much later and possibly last a little longer within a century, according to new research. Climate change could postpone fall leaf peeping in some areas of the United States as summer temperatures linger later into the year, Princeton University researchers report in the journal Global Ecology and Biogeography.
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The prime cod fishing grounds of North America have been depleted or wiped out by overfishing and poor management. But in Arctic waters, Norway and Russia are working cooperatively to sustain a highly productive — and profitable - northern cod fishery.
What years of dwelling in the cold Atlantic had amassed, an army of knife-wielding, white-suited Norwegian factory workers were taking apart in just minutes. In a consummate display of optimization, streams of fish parts were whisked along on conveyor belts around and above me, with various cuts destined for their most appropriate markets. Nothing was wasted.
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Para finales de agosto en Noruega se habÃan matado 729 ballenas minke septentrionales (Balaenoptera acutorostrata) durante la temporada anual de caza de ballenas, el número más alto desde 1993. Noruega continúa la caza de ballenas por haber presentado una “objeción†en la Comisión Ballenera Internacional (CBI), que tiene prohibida la caza de ballenas en todo el mundo, con unas pocas excepciones para los pueblos indÃgenas.
Sólo tres paÃses siguen practicando la caza de ballenas: Islandia, Noruega y Japón.
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From big company agricultural farming, to communal farming or even personal agronomy, the business of growing crops for an expanding global population will be crucial in the near future. The two most important resources needed to run these farms are one, water, and two, land. But these resources often come at a premium, especially with growing populations and increased food demand. Farmers and researchers have already started leaning towards genetic engineering and industrial processing to help with their crop yields, but a new solution in agribusiness is emerging. Vertical farming.
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